Offset printing platon press

04/12/2023Prepared By MD ALI HOSSAIN

Welcome To

Platon & Offset Printing Presses

Presented By

MD.ALI HOSSAINJr.Instrutor, Govt.Graphic Arts Institute

Email: malihossain.88@gmail.com

Fb mail: students.gai@gmail.com

04/12/2023Prepared By MD ALI HOSSAIN

Platon Press

04/12/2023Prepared By MD ALI HOSSAIN

Offset Presses

Fig: Feeding System.

04/12/2023Prepared By MD ALI HOSSAIN

Offset Presses

Fig: Feeding System.

04/12/2023Prepared By MD ALI HOSSAIN

Offset Presses

Fig: Feeding System.

04/12/2023Prepared By MD ALI HOSSAIN

Offset Presses

Fig: Feeding System.

04/12/2023Prepared By MD ALI HOSSAIN

Offset Presses

Fig: Registration system

04/12/2023Prepared By MD ALI HOSSAIN

WEB VS. SHEET

Web Fed Press: Printing press that prints from a roll of paper

Sheet Fed Press: Printing Press that prints from cut sheets of paper

Web Fed

Sheet Fed

04/12/2023Prepared By MD ALI HOSSAIN

PERFECTING PRESS

Perfecting Press – Prints on both sides of the paper with one pass.

04/12/2023Prepared By MD ALI HOSSAIN

WEB VS. SHEET

Web Fed Press: Printing press that prints from a roll of paper

Sheet Fed Press: Printing Press that prints from cut sheets of paper

Web Fed

Sheet Fed

04/12/2023Prepared By MD ALI HOSSAIN

Printing Technology Web offset printing

In the web offset printing, difference is made between newspaper printing machines and commercial web offset machines.

Characteristics of the web offset printing:

High printing speed up to 900 m/min

Grammages of 45 - 200 g/m² usual

High runs

04/12/2023Prepared By MD ALI HOSSAIN

Printing technology Web offset printing

Drying oven

Hot airInlet temperature > 200°C Web temperature approx. 120°CThe length of the oven is very important

04/12/2023Prepared By MD ALI HOSSAIN

Printing technology Web offset printing

Paper web in one unit

Plate cylinder

Blanket cylinder

Plate cylinder

Blanket cylinder

Paper web

Colour absorption

Water absorption

Moisture resistance pH5

No deformation

Resistant against cracking of the colour

04/12/2023Prepared By MD ALI HOSSAIN

Printing technology Web offset printing

Center cut

04/12/2023Prepared By MD ALI HOSSAIN

Printing technology Web offset printing

Paper on the turner bars

04/12/2023Prepared By MD ALI HOSSAIN

Printing technology Web offset printing

Fold softening

04/12/2023Prepared By MD ALI HOSSAIN

Printing technology Web offset printing

Paper on the former fold

04/12/2023Prepared By MD ALI HOSSAIN

Printing technology Web offset printing

Stacker

04/12/2023Prepared By MD ALI HOSSAIN

Printing technology Web offset printing

Cylinder folder

04/12/2023Prepared By MD ALI HOSSAIN

CPC Control Offset Press.

Fig : Heidelberg SM 74-5

04/12/2023Prepared By MD ALI HOSSAIN

Ink Control System……..

04/12/2023Prepared By MD ALI HOSSAIN

Dampening Control System……..

04/12/2023Prepared By MD ALI HOSSAIN

Resistration Control System……..

04/12/2023Prepared By MD ALI HOSSAIN

Thank You